Francesco Severi: il suo pensiero matematico e politico prima e dopo la Grande Guerra

The aim of this article has been to put together various aspects of the personality of the Italian mathematician Francesco Severi: the mathematical, the political, the institutional, academic and philosophical one. We tried in particular to elucidate if the events related the First World War represented a turning point in the life and scientific production of Severi.
Comment: This paper is in Italian